Color plates usually refers to the cold-rooled steel plate or coating steel with the surface treatment (degreasing, phosphating, passavation), and then coating (roller coating) barked products, for users to directly process, color plates has high strength, corroson resistance, good processing performance, highlight and rich colors, widely used in construction, transportation, light industry, household appliances, automobile and other undustries, particularly in the cinstruction industry in the plant, activity rooms and doors and undows great demand.